[Performance] Lag and stuttering issues on macOS (MacBook Pro M1 Pro)

[AlexandreVILLANI]

Preliminary Checks

• I have read and understood the important section above.
• I have searched existing issues and avoided creating duplicates.
• I am not filing an enhancement request.
• I have checked that this issue cannot be reproduced on Mozilla Firefox.
• I have checked that this issue can be reproduced once I removed all my Mods and Custom CSS.

What happened?

Description:
I am experiencing noticeable fluidity and performance issues (lag, stuttering) while using Zen Browser on my MacBook Pro M1 Pro running macOS.

Details:
Scrolling on heavy pages feels choppy rather than smooth.

Expected behavior

the page supposed to be at 120fps

Actual behavior

the page is really laggy at some moments

Steps to reproduce

Steps to Reproduce:

Open Zen Browser on a MacBook Pro M1 Pro.

Navigate to a media-heavy website or scroll quickly through a long page (example : 

Observe the drop in frame rate and choppy animations.

Screenshots and videos

https://youtu.be/jGHDd1r2O-s

Version

1.21.9b

What platform are you seeing the problem on?

macOS - aarch64

What component is this issue related to?

Performance

Relevant log output if applicable